\begin{tabular}{|r||r|r|r|r|r|}
\hline
Diameter   & \multicolumn{5}{c|}{Percentiles of age} \\
(cm)   & 5th & 25th & 50th & 75th & 95th \\
\hline
0.3 & 0.7  & 1.3  & 2.0  & 3.4  & 6.0 \\
0.4 & 1.3  & 2.7  & 4.0  & 5.4  & 8.7 \\
0.5 & 2.0  & 4.0  & 5.4  & 7.4  & 11.4 \\
0.7 & 2.7  & 5.4  & 7.4  & 10.1  & 14.8 \\
1.0 & 4.0  & 6.7  & 8.7  & 12.1  & 16.1 \\
1.3 & 5.4  & 8.1  & 10.7  & 13.4  & 18.8 \\
1.8 & 6.0  & 9.4  & 12.1  & 15.4  & 20.8 \\
2.5 & 6.7  & 10.7  & 14.1  & 17.5  & 24.2 \\
3.3 & 8.1  & 12.8  & 16.1  & 19.5  & 25.5 \\
4.5 & 10.1  & 14.1  & 17.5  & 21.5  & 28.2 \\
6.0 & 10.7  & 15.4  & 19.5  & 23.5  & 30.2 \\
8.2 & 12.1  & 16.8  & 20.8  & 24.8  & 32.2 \\
11.0 & 13.4  & 18.8  & 22.2  & 26.8  & 34.2 \\
14.9 & 14.8  & 20.1  & 24.2  & 28.9  & 35.6 \\
\hline
\end{tabular}
